The Effect of Test Conditions on the Particle Size Distribution Analysis in the Laser Particle Size Analyzer
Appropriate testing conditions of laser particle size analyzer are very important for the accuracy of particle size distribution data.Powders with different particle sizes were tested under different test conditions,based on the OMEC LS-909 laser particle size analyzer and SCF-105B wet sample injector.It was found that the sample with particle size less than 1 μm,is recommended to ultrasound for more than 60 minutes,with a shading rate of 5％～8％,and a pump speed of 2 000～3 000 r/min.However,for the sample with several tens of micrometers,ultrasound is not necessary.An appropriate testing condition is the shading rate of 10％～15％with pump speed of 1 500～2 500 r/min.For the sample with a few hundred microns,ultrasound is not necessary,the testing condition should be a shading rate of 10％～20％,and a pump speed of 2 500～3 500 r/min.The test results are reliable and repeatable under the above conditions.
public analysis testinglaser particle size analyzerprecision instrumentparticle size
万方数据
维普
